121435512016 has 80 divisors (see below), whose sum is σ = 289645461504. Its totient is φ = 48029064192.

The previous prime is 121435511969. The next prime is 121435512019. The reversal of 121435512016 is 610215534121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121435512019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8937420 + ... + 8950996.

Almost surely, 2^121435512016 is an apocalyptic number.

121435512016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121435512016 is an abundant number, since it is smaller than the sum of its proper divisors (168209949488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121435512016 is a wasteful number, since it uses less digits than its factorization.

121435512016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19748 (or 19742 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 121435512016 in words is "one hundred twenty-one billion, four hundred thirty-five million, five hundred twelve thousand, sixteen".